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No Model.) 3 SheetsSheet 1. O. SGHOLLE.

STRIKING MECHANISM FOR TIME PIECES.

Patented Apr. 14, 1885.v

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O. SOHOLLE.

STRIKING MECHANISM FOR TIME PIECES.

(No ModeL) Patented Apr. 14, 1885.

mum/M mm 1 m 1% w AWN W ATTORNEYS (N0 ModeL) 3 Sheets-Sheet 3.

O. SGHOLLE.

STRIKING MECHANISM FOR TIME PIECES. No. 315,843. Patented Apr. 14, 1885.

R. a has WITNESSES: INVENTOR @Iw, 4W MM Smm ATTORNEYS N, PEYERS. Fheloixlhbgmphor, Washmgwn. n. (L

UNITED STATES PATENT OFFICE.

CARL SOHOLLE, OF NElV YORK, N. Y.

STRIKING MECHANISM FOR TIME-PIECES- SPECIFICATION forming par. of Letters Patent No. 315,843, dated April 14, 1885.

Application filed December-18, 1884.

T aZZ whom it may concern:

Be it known that I, CARL SoHoLLE, a citizen of Austria, residing at New York, in the county and State of New York, have invented new and useful Improvements in Striking Mechanism for Time-Pieccs, of which the following is a specification.

This invention relates to a striking mechanism or striking device for time-pieces or clocks containing a segment for quarter-hours and pins for the hours. A cam is provided for moving the striking-drum into its proper position when required.

This invention is illustrated in the accompanying drawings, in which Figure 1 is a face view of a clock or time-piece with my invention applied, the striking apparatus being shown in a period of rest or not engaged in striking. Fig. 2 is a section in the plane 0000, Fig. 4, looking in the direction of the arrow 13. Fig. 3 is a section in the plane 3 3 Fig. 4, looking in the direction of the arrow 14. Fig. 4 is an end or side view of the striking-train and its adjacent mechanism. Fig. 5 is a face view of the segment and pins and adjacent apparatus of the striking mechanism showing the same in a different position from that shown in Fig. 1, and parts being broken away. Fig. 6 is a detail face View of part of the strikingtrain and detents, partly in section. Fig. 7 is a section in the plane 2 2, Fig. 3, looking in the direction of the arrow 15.

Similar letters indicate corresponding parts.

The mechanism is shown in the drawings as applied 'to a clock. The going mechanism of the clock is not represented in detail, as it may be of well-known construction.

The letter A indicates a toothed wheel of the striking-train, to which motion is imparted at the proper periods by a spring or weight or other suitable motor. G is akey-stud for the reception of a key for winding up the motor of the striking mechanism.

The revolution of the motor-wheel Aimparts motion to the toothed wheels B, D, O, E, and F of the striking-train. \Vhen the striking-train is to be out. of action and no striking is to take place, the striking-train is held stationary by a stud, a, on the wheel E, striking against the shoulder b of the primary detent or arm 1), Figs.

2, 4, and 6. In Fig. 2 is shown the stud a in contact with the shoulder b of the primary detent I), and in Fig. 6 said stud a is shown out of contact or out of gear with said shoulder Z) of said primary detent Z). This primary detent 1) consists of an arm keyed or firmly fixed to the axle c, and on this axle cis also firmly keyed or fixed the primary detent-armd. (See Figs. 1, 4, and 5.) The axle c, and with it the primary detent b and arm (I, can turn in bearings in the frame-plates of the mechanism.

On the axis of the minute-hand is a disk or drum, H, Figs. 1 and 5, which revolves with the minute-hand in the direction of arrow Y, (shown in Figs. 1 and 5,) making one complete revolution every hour. On this disk or drum H are pins or studs is Z m n, fixed at different distances from the center. When the timepiece is about to, indicate a quarter past an hour,the stud on the drum H approaches the actuating-arm t, as seen in Fig. 1, and causes said arm 42 to move about the pivot or axis 71, thereby causing the secondary detent-arm f, which is firmly connected to the actuatingarm i, to swing in the direction of the arrow shown thereon in Fig. 1. The stud g on the secondary detent-arm f also presses against the primary detent-arm d and causes it to swing in the direction of the arrow shown on said arm d. (Shown in Fig. 1.) This motion of the primary detent-arm (1 causes a partial revolution of the axis 0, sufficient to raise the shoulder b of the primary detent b on said axle 0 from the position shown in Fig. 2 toward the position shown in Fig. 6, until said shoulder b of the detent b is out of contact with the stud a on the wheel E of the striking train. The wheels of the striking-train now revolve a small distance until the stud a, Figs. 2, 4, 6, on the wheel F of the strikingtrain comes into contact with the secondary detent g, which is fixed to the secondary detent-arm f, as shown in the dotted lines in Figs. 1 and 5, and which secondary detent g has been moved into the path of the stud a on the wheel F by the above-described motion of the secondary detent-arm f in the direction of the arrow shown thereon in Fig. 1. Said second ary detent q is shown in Fig. 6 in engagement with the stud a. The motion of the arm (Z in the direction of arrow shown thereon in Fig. 1 also raises the tooth 0 out of engagement with the tooth on the segment 0, and allows the spring I, Fig. 1, which presses onto the tail J ofthe arm 1) of said segment 0, to swing said segment 0 and arm about the pivot K in the direction of the arrow shown on said arm 1) in Fig. 1 until the tooth Z of the segment 0 strikes against the tooth e of the primary detent-arm (I, thus arresting the motion of the segment 0 in the directionin which it is moved by the spring I. By this time the revolution ot'the disk H in the direction of arrow Y has carried the stud 70 so far around that the next movement in the direction of arrow Y will carry said stud k out of contact with the arm t, thus allowing said arm '5 to fall back toward its original position, (shown in Fig. 1,) the secondary detent-arm f, at the same time falling or passing back in the direction shown by the arrow on said armf in Fig. 5. The return motion of the secondary detent-arm f carries the secondary detent q back toward its original position (shownin Fig. 2)thatis, out of the path of the stud u. The return motion of the secondary detent-armf, and with it of the stud g on said arm f, carries the stud g away from the arm (I, and leaves the tooth e of said arm (Z resting against the tooth Z of the segment 0. Upon the stud u of the wheel F being freed from contact with the secondary detent q, the wheels of the striking-train will revolve, thus causing a revolution of the axis L of the toothed wheel 0 of the strikingtrain. On this axis L is mounted a striking-drum, S, Figs. 3 and 4, having teeth W on its periphery or surface, and the revolution of the strikingdrum S, which takes place in the direction of the arrow shown near said striking-drum Sin Fig. 3, brings the teeth vV against the tails of the arms of the hammers U, actuating said hammers U and causing them to strike a gong or alarm. The hammers U in the example shown in the drawings are for striking quarter-hours, and the hammer T is for striking hours, and the action of these hammers T U will be more fully referred to hereinafter. The revolution of the wheels of the strikingtrain causes a revolution of the axis a of the wheel E in the direction of the arrow 16 shown about said axis a in Fig. 5. On said axis a and revolving therewith is a pawl, c, and each revolution of said pawl 0 brings said pawl 0 into temporary engagement with one of the teeth 0 011 the segment 0, thereby impelling the segment 0 in the direction of the arrow shown on the arm 12 of said segment in Fig. 5. The motion of the segment 0 caused by one revolution of the pawl 0 causes the tooth Z of said segment 0 to move away from the tooth e in the direction of the arrow shown on the arm 1) in Fig. 5, and said tooth c, riding over the inclined upper face of the tooth Kof the segment 0, falls upon the segment 0 beyond the tooth k, the tooth 6 thus returning with the primary detent-arm d to the position shown in Fig. 1, in which position the primary detent b is placed in the path of the stud a on the wheel E, thus arresting the striking-train. The disk or drum H continuing to revolve in the direction of arrow Y, a half-hour past the hour will next have to be sounded, and the stud Z 011 said disk or drum H is brought into contact with the actuating-arm i, causing the above-described movements of the detents Z) q, arms (Z and f, and segment 0 to be repeated, with this difterence,that the stud Z, being placed farther from the center of the disk H than the stud 7c, the actuating-arm 2' will be raised higher by said stud Z than it was by the stud 7.1. This greater movement of the actuating-arm L is so adjusted that the primary detent-arm d and its tooth e are moved in the direction of the arrow shown 011 the arm (Z in Fig. 1, for such a distance that the tooth m on the segment 0 now comes into engagement with the tooth e inplace of the tooth Z, as was the case when a quarter past the hour was to be sounded, as above described. The tooth e of the primary detent-arm (1 being now in engagement with the tooth m of the segment 0, and one revolution of the pawl a, moving the segment 0 in the direction of the arrow on the armp in Fig. 5, only for the space of one of the teeth on the segment 0 it will require two revolutions of the pawl c to return the segment 0 to the position shown in Fig. 1, when the detent I) again stops the movement of the striking-train. The increased number of revolutions of the pawl c is accompanied by a correspondingly greater movement of the striking-train, and also by an increased revolution of the striking-drum S, and an increased number of soundings of the gong or azarm indicating the half'hour. The stud m on the disk H is placed farther from the center of the disk H than the stud Z, and its contact with the actuating-arm t, through the revolution of the disk H, moves said arm t for such a distance that the tooth a ofthe segment 0 now comes into contact with the tooth e ofthe detentarm d. Three revolutions of the pawl c are now required to return the segment 0 to the position shown in Fig. 1, thus causing three-quarters past the hour to be struck or sounded before the striking-train is arrested by the primary detent b. \Vhen the hands of the time-piece indicate the hour, the stud a on the disk H has acted upon the actuating-arm i. This stud n is placed such a distance from the center of the disk H that by its movement against the actuatingarm 2' the tooth e of the primary detent-arm d is raised entirely out of gear with the teeth is Z m a and the remaining teeth 0 on the segment 0, as seen in Fig. 5. The segment 0 is now moved by the spring I in the direction of the arrow (shown on the arm p in Fig. 1) until the studs on the hour-detent arm 9' strikes against the hour-disk t. This hour-disk t revolves in the direction of arrow Y, Figs. 1 and 5, at the same rate as the hour-hand, making,ordinarily, one complete revolution every twelve hours. Each succeeding portion of the hour-disk t is cut out deeper than the one immediately preceding it, thus allowing the segment 0 to be swung in thedirection of the arrow on the arm 1) in Fig. 1 a greater or less distance before the stud s strikes against the hour-disk t and arrests the motion of the segment 0, produced by the action of the spring I.

The greater or less distance that the segment 0 is allowed to be moved by the spring I depends upon the number of hours to be an nounced by the striking mechanism.

The manner in which the hours are sounded is as follows: M N is a bell-crank lever swing ing about its fulcrum or pivot O, and P Z are twostationary studs projecting from one of the frame-plates of the structure and limiting the motion of the bell-crank lever M N in either direction. The bell-crank M N is so balanced that when left free its arm M will move to the stop P. A spring may be used, if desired, to attain thistendency of motion. From the actu' ating-arm t projects a stud, v, and when said actuating-arm is moved by the stud a on the disk H said stud 1) causes the bell-crank M N to move about its fulcrum in such a direction that its arm M is carried toward the stop or stud Z. The hour-pin 1, Figs. 1 and 5, on the segment 0, coming against the under face ofthe inclined shoulder e on the arm N also carries the bell-crank M N in the aforesaid direction, with its arm M toward the stud Z, until the shoulder e rests against the under side of the hour-pins, (marked 1 to 12, both inclusive,) which hour-pins project from the segment 0. When the segment 0 now swings in the direction of the arrow on its arm 1) in Fig. 1, the hour-teeth on said segment 0 ride over the upper edge of the inclined shoulder e on the bellcrank M N. The hour-disk t allows the segment 0 to swing, as just stated, until the sh oulder 0 rests against a certain hour-pin. For example, if six hours are to be announced by the striking mechanism, the shoulder e rests immediately in front of the hour-pin 6 and against the hour-pin 7, as seen in Fig. 5, where the parts exposed to view are shown in the position occupied by them immediately before the clock or time-piece announces six oclock. \Vhen the hands of the mechanism reach six o clock, the stud n on the disk H passes out of contact with the actuating-arm 2', thereby causing the secondary detentarm f to move the secondary detent q out of engagement with the striking-train, and allowing the strikingtrain to move and sound the alarm. The movement of the striking-train, as already stated, causes the pawl c to revolve and move the segment 0 in the direction of the arrow on its arm 1) in Fig. 5. The pawl 0 now makes four revolutions, causing the teeth V on the striking-drum S to actuate the hammer U and announce four quarters past the hour. The motion of the segment 0 in the direction of the arrow on its arm p in Fig. 5 has meanwhile brought the arm M of the bell-crank V toward the stud or stop P, and when the fourth quarter has been sounded by the action of the pins WV of the drum S on the hammers U the incline or cam w on the arm M of the bellcrank, Fig. 4, has been pressed against the projecting end of the axle L of the strikingdrum S by the action of the hour-pin 6 upon the shoulder e of the bell-crank. The axle L, on which is mounted the striking-drum S and toothed wheel 0, is free to slide longitudinally in its bearings for a short space, but without thereby putting the toothed wheel 0 out of gear with the wheel D. When, now, the cam 10 of the bell-crank M N is pressed against the end of the axle L, projecting into the path of said cam 20, the axle L is pressed, against the resistance of the spring R, in the direction of j the arrow on said axle L in Fig. 4, carrying with it the striking-drum S for a suflicient distance to bring the teeth V out of the paths of engagement with the tails of the arms of the hammers U, and bringing the teeth or pins V by said movement of the drum S into such a position that said pins or teeth V on the revolution of the drum S will actuate the hammer T, while the teeth XV pass between or to one side of the tails of the arms of the haminers U, leaving the hammers U inactive. The hour-pins from 6 to 1, both inclusive, on the segment 0, pass along in the direction of the arrow on arm 1) in Fig. 5 under the shoulder e of the bell-crank M N while the hours are being sounded, and prevent the bell-crank from swinging the cam 10 out of contact with the axle L until the pin 1 or segment 0 has passed from under the shoulder e, by which time the hammer T will have struck the alarm six times, announcing six oclock. It is thus seen that on the expiration of an hour the alarm through the hammer U first strikes four quarters, indicating the passage of four quarters of an hour, and thereupon the hammer T announces the full hour.

YVhen more than six oclock is to be sounded, anotheroneof the hour-pinsfor example,10

is brought into engagement with the shoulder e of the bell-crank M N; and if less than six oclock is to be sounded, still another one of the hour-pins-for example, 3-is brought into engagement with the bell-crank M N. There are twelve hourpins on the segment 0,as seen, each additional pin being for an additional full hour.

When the hour-for example, six oclockhas been sounded, as just explained, the continued revolution of the disk Hwill bring the stud 7; into engagement with the actuating-arm i to bring the striking mechanism into position for sounding a quarter past the hour, as already explained. The action of the stud 0 upon the bell-crank M N,produced by the motion of the actuating-arm t, swings the arm M of said bellcrank M N away from the stud P, from the position of the bell-crank M N shown in Fig. 1 to that shown in Fig. 5, so that the cam w is carried out of contact with the axle L, leaving the spring E, Fig. 4, free to press the axle L back in the direction opposed to the arrow on the axle L in Fig. 4. The axle L, and with it the striking-drum S, are thus carried into such a position that the teeth XV onthe revolution of the drum S actuate the hammers U, while the teeth V on said drum S do not actuate the hammer T. 7

As seen in Fig. 3, the teeth ,W are divided into four groups on the surface or periphery of the drum S, each group consisting of four pins, NV, and one pin of each group being made to operate a particular hammer, U. Each of the hammers U, as also the hammer T, may be made to operate a different-sounding bell, and by variably arranging the pins WV on the surface of the drum S pleasing effects in the sounding of the bells or alarms may be obtained. In the device shown in the drawings, each of the four groups of pins 1s made to indicate the passage of one quarter of an hour. A quarter-revelution of the drum S-actuates each of the hammers U once, indicating the passage of a quarter of an hour. One-half of a revolution of the drum S causes each of the hammers U to be operated twice, as two groups of the pins IV are now brought into operation, indicating the passage of two quarters of an hour. In like manner threequarters of a revolution of the drum S causes each of the hammers U to be actuated three times, indicating the passage of three quarters of an hour. To announce the passage of four quarters of an hour, the drum S makes a complete revolution, causing each of the hammers U to be actuated four times, and as soon as the hammers U have been actuated four times the cam w moves the drum S, so as to put the teeth XV out of gear with the hammers U and the teeth V into gear with the hammer T, when the continued revolutions of the drum S indicates the full hours-as, for example, six oclock by six strokes of the hammer T-as already 6X-' plained. Q are springs which act to return the hammers to their original positions after displacement by the pins V \V.

hat I claim as new, and desire to secure by Letters Patent, is

1. A striking mechanismor alarm provided with a segment, 0, for quarter-hours, and with pins (1 to 12) for the hours, substantially as set forth.

2. A striking mechanism or alarm provided with pins and with a cam, 10, for moving the striking-drum S, substantially as set forth.

3. The combinatio11,with the segment 0 and pins, (1 to 12,) of a cam, 10, for moving the striking-drum S, substantially as set forth.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

CARL SGHOLLE. [n

lVitnesses:

W. HAUFF, A. FAHER DU Faun, J r. 

